SB2025040273 - NULL pointer dereference in Linux kernel typec ucsi driver
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025040273
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-21918)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ucsi_init() and ucsi_unregister() functions in drivers/usb/typec/ucsi/ucsi.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/079a3e52f3e751bb8f5937195bdf25c5d14fdff0
- https://git.kernel.org/stable/c/46fba7be161bb89068958138ea64ec33c0b446d4
- https://git.kernel.org/stable/c/592a0327d026a122e97e8e8bb7c60cbbe7697344
- https://git.kernel.org/stable/c/b13abcb7ddd8d38de769486db5bd917537b32ab1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.133
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.83